Gas burner



July ze, 1927.

A. Fl THOMPSON GAS BURNER Filed Deo. 2, `1926 Patented July 26, 1927.

UNITED STATES AUGUSTUS F. THOMPSON, OF HUNTINGTON, WEST VIRGINIA.

GAS BURNER.

Application led December 2, 1926. Serial No. 152,151.

This invention relates to that type of gasburner in which a jet of gasunder pressure is injected into an inlet-tube, preferably of the Venturitype, in such manner as to draw into the inlet-tube a quantity of air,the air and the gas being injected into a mixingchamber where they areintimately mixed before exit at the burner-tips, and the object of thepresent invention is to insure a more' even distribution of the gas-airmixture to the burners in that specific type of burner shown in myformerPatent No. 1,563,050, dated November 241, 1925.

In the drawing- Fig. 1 is a vertical sectional view of my improvedburner;

Fig. 2 is a plan view thereof;

Fig. 3 is an end elevation.

Referring to the drawing annexed by reference-characters, designates aninlet cup or bell having in its center a tubular support 11 for theexit-end of the gas-supply pipe 11n which is positioned to throw acontinuous jet of gas into the inlet-tube 12 connected with themouth-piece 10. The inner end of this inlet-tube opens upwardly into atube 13 toward the rear end thereof.

A parallel mixing-tube 15 is provided and the ends of this tube 15 areconnected to the respective ends of the tube 13 by end-connections 16,these end-connections being curved, i. e., semi-circular, to insure easyand even delivery of the mixture into the final mixing-tube 15. The topface of the final tube 15 is provided with a series of openings 17 forthe reception of the usual burner-tips. The whole structure is desirablycast in one piece, the inlet-tube 12 being integral with the under wallof the preliminary mixing-tube 13. This structure provides a very simpleway of thoroughly mixing the gas and air, without lowering its pressureat the burner-tips, and at the same time insuring a uniform pressure atthe burner-tips, this latter being obviously a very desirable result.

At the juncture of the tube 12 with the tube 13, the tube 12 is enlargedto form a globular chamber 19, the object of which is to form a sortofreservoir that will prevent all tendency to jet the mixture into onearm or the other of the tube 13 and thus insure an even flow of themixture into said arm 13 to the end that the pressure in both arms of,the tube 13 shall be approximately equal at all times, whereby isinsured an even distribution yof the mixture to the Aburners in the tube15.

In this way, I have been able to do away with the double deflector 14;shown in my aforesaid former patent and at-the same time I get a moreeven distribution of the mixture. The jet coming in through tube 12enters the globular chamber 19 and causes a whirling action therein,thus tending to prevent any jetting of the mixture when it enters thetube 13.

that I claim as new is:

1. In a burner of the type set forth, an elongated mixing-chamberconsisting of two tubes joined at their ends, one of these tubes beingprovided with a series of burner-holes along its length and the otherbeing provided with a gas-and-air inlet at a point in its length, and agas-and-air injector-tubev connected with said inlet, this tube at thepoint of juncture with the inlet being lat erally enlarged to form achamber, for the purpose set forth.

2. In a burner of the type set forth, an elongated mixing-chamberconsisting of two tubes joined at their ends, one of these tubes beingprovided with a series of burner-holes along its length and the otherbeing provided with a gas-and-air inlet at a point in its length, and agas-and-air injector-tube connected with said inlet, this tube at thepoint of juncture with the inlet being enlarged to form a globularchamber, for the purpose set forth.

In testimony whereof I hereunto atlx my signature.

AUGUSTUS r. THOMPSON.

